Bullet: RMR 124gr RNFMJ
Primer: CCI-500
Case: Mixed
Powder: Winchester 231
COAL: 1.150\”
Kahr CM-9 Chrono Data (3\” barrel):
Ambient Temp. 72F
Charge Wt. Measured Velocity
4.2 903 fps
4.4 950 fps
4.6 981 fps
4.8 1008 fps
5 1041 fps (hot load)

Springfield Hellcat Chrono Data (3\” barrel):
Ambient Temp. 78F
Charge Wt. Measured Velocity
5.0 1126 fps (hot load)

Caution: The 5.0 gr. load is hot but reliable in two specific guns I\’ve tested them in. I have not seen any pressure warning signs in my guns, but for reference, my +P Federal 124gr factory ammo measured 1030fps out of my CM9.

Note: The Hellcat seems to have a tighter chamber than the CM-9. That plus the slightly warmer conditions might possibly explain the higher velocity.